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16 mph
This question is impossible to answer without knowing how many hours the trucker traveled in the snow storm. Without that information, the problem is unsolvable.
At double the speed, it's presumable that the five hours less is half of the time the trip took in the one direction - hence, the first trip took 10 hours. To travel 280 miles in ten hours, the average speed would be 28 MPH, and to halve that on the return trip, the average speed would be 56 MPH
Well its easy. simpley times 3 by 5 then subtract the answer (15) by 60 (60 mins. i one hour) which equals 45 and that is the distance he traveled in miles/feet whatever it is
One third less than zero.